Preparation for a 1.2 release

[djplaner]

Getting close - final checks

• [x] #265
• [x] Finalise dates documentation updates
• [x] #260
• [x] #268
• [x] Reset the "edit off" timeout to non dev timing
• [x] #8
• [x] Rewrite readme.md template for announcement
• [x] #270
• [x] Claytons documentation - reference animation needs updating
• [x] Need video for Claytons (on getting started page)
• [x] What about CSS for Claytons
• [ ] #175 (or similar)
• [x] Update versioning in code
• [x] Update/tidy up user scripts
• [x] document local development with Chrome
• [x] Update latest version in documentation (latest)
• [x] Use of new logo in Collections Configuration files
• [x] Update docs for institutional installation
• [x] Tidy up documentation practices
• [x] #269
• [x] Check other issues for finalisation
• [x] #267
• [x] Add documentation re: representations in references
• [x] HorizontalCards is showing "no collection" if a collection is not default collection on first entry
• [x] Add video for get-started/concepts coverage of claytons - show full claytons and link to animated GIF in reference that shows multi pages....link back to the video from there
• [x] #272